Mainframe multiprocessor



FIG. 1 is a perspective view of the front right side of the mainframe multiprocessor;

FIG. 2 is a front elevation view;

FIG. 3 is a rear elevation view;

FIG. 4 is a left side elevation view;

FIG. 5 is a right side elevation view; and,

FIG. 6 is a top elevation view. 

The ornamental design for a mainframe multiprocessor, as shown. 